/*
 * This file is part of Applied Energistics 2. Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved. Applied
 * Energistics 2 is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General
 * Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
 * later version. Applied Energistics 2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
 * Public License for more details. You should have received a copy of the GNU Lesser General Public License along with
 * Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.util.inv;

import net.minecraft.inventory.ISidedInventory;
import net.minecraft.item.ItemStack;
import net.minecraftforge.common.util.ForgeDirection;

public class WrapperMCISidedInventory extends WrapperInventoryRange implements IInventoryWrapper {

    private final ISidedInventory side;
    private final ForgeDirection dir;

    public WrapperMCISidedInventory(final ISidedInventory a, final ForgeDirection d) {
        super(a, a.getAccessibleSlotsFromSide(d.ordinal()), false);
        this.side = a;
        this.dir = d;
    }

    @Override
    public ItemStack decrStackSize(final int var1, final int var2) {
        if (this.canRemoveItemFromSlot(var1, this.getStackInSlot(var1))) {
            return super.decrStackSize(var1, var2);
        }
        return null;
    }

    @Override
    public boolean isItemValidForSlot(final int i, final ItemStack itemstack) {

        if (this.isIgnoreValidItems()) {
            return true;
        }

        if (this.side.isItemValidForSlot(this.getSlots()[i], itemstack)) {
            return this.side.canInsertItem(this.getSlots()[i], itemstack, this.dir.ordinal());
        }

        return false;
    }

    @Override
    public boolean canRemoveItemFromSlot(final int i, final ItemStack is) {
        if (is == null) {
            return false;
        }

        return this.side.canExtractItem(this.getSlots()[i], is, this.dir.ordinal());
    }
}
